Picked up a Humminbird 678DI unit over the winter and installed it on the boat the previous weekend. Took a couple trips to get the unit and settings dialed in to where I wanted them, but I think I've got things headed in the right direction. Met up with buddy Lee Dilley yesterday afternoon and put the unit to the test. Found a nice tree sitting on the bottom of the river channel in 32 feet of water with a load of crappies hanging around the general area and proceeded to rain some jigs down on their heads. Ended up with around 50+ crappies caught, and a nice limit of fish for the photo op.